| strata | asl_dates | asl_pct | escapement_dates | escapement_pct |
|---|---|---|---|---|
| 1 | Jun 06 to Jun 19 | 0.22 | Jun 01 to Jun 19 | 0.30 |
| 2 | Jun 20 to Jun 22 | 0.26 | Jun 20 to Jun 22 | 0.14 |
| 3 | Jun 23 to Jun 25 | 0.29 | Jun 23 to Jun 25 | 0.30 |
| 4 | Jun 26 to Jul 14 | 0.23 | Jun 26 to Aug 25 | 0.26 |
Deshaka Weir Chinook ASL
Note: Updated 9/28/2023 with new weir.csv and ASL.csv data that had been cleaned. Ages that were coded with single digit values to indicate errors for unreadable scales were changed to be NA. Lengths for 8 fish were originally input as total length and were converted to MEF length. The total number of samples listed in the weir data set and the ASL data set do not match. It appears that the issue is caused by a mismatch on three days. On 6/18 weir samples lists 13 vs. ASL samples that shows 12, on 6/21 weir samples lists 17 vs. ASL samples that shows 14, and on 7/05 weir samples lists 15 vs. ASL samples that shows 14. I left the raw data alone, but for this analysis I used the number of samples from the ASL dataset and amended the weir dataset to match.
Chinook ASL with Quartile Strata
The KS test suggests that the sampling process was not proportionally representative of the entire run. The operational plan specifies that strata should be assigned such that each stratum to contains approximately a quarter of the total run. Consequently, the first stratum should extend from 6/1/23 to 6/18/23. By including 6/19 in the first stratum, we are able to better align the sampling proportions with the passage proportions and simultaneously allow sampling and passage to contain roughly 25% of the total run / samples.
LRT Tests / Plots - 4 Strata
Likelihood ratio test (G-test) indicates that sex composition does differ between time strata.
F M Sum
1 32 48 80
2 31 66 97
3 48 59 107
4 50 33 83
Sum 161 206 367
Log likelihood ratio (G-test) test of independence without correction
data: t.sex
G = 15.248, X-squared df = 3, p-value = 0.001617Likelihood ratio test (G-test) indicate age composition does differ between time strata.
1.1 1.2 1.3 Sum
1 31 29 12 72
2 38 22 18 78
3 37 28 20 85
4 14 27 21 62
Sum 120 106 71 297
Log likelihood ratio (G-test) test of independence without correction
data: t.age
G = 14.371, X-squared df = 6, p-value = 0.02576
